Masterflow Grouts  

Before carrying out any grouting operations consult your BASF Middle East representative for advice on selection of the correct grout for your application and installation methods.

  Foundation preparation

  Preparation of the concrete surface to which the grout will bond should be carried out before the base plate is placed.

Prepare the concrete surface using a chipping hammer, grit blasting or high pressure water jetting to leave a rough but clean surface free from all forms of contamination.  Bush hammering is not recommended.

Bolt pockets should be prepared and cleaned out before the base plate is fixed.

  Base plate

  The underside of the base plate should be free of rust, oil or grease.

The minimum gap width between the base plate and foundation should be 25mm for base plates up to 1m wide, increasing by 20mm for each additional metre of width.

  For base plate pours over 1m in width or when the gap width is less than the minimum recommended, please consult your local representative.

  Formwork

  Before fixing formwork ensure the base area and bolt holes are clean.  Formwork fitted around the base plate to contain the grout must be as water tight as is practical, to prevent grout loss.  The top of the formwork should be a minimum of 2.5cm above the underside of the base plate.  For large base plate pours or when the gap between base plate and foundation concrete is less than recommended, the formwork should be higher to allow a pressure head to build up.

  On the pouring side, which should be the shortest distance across the base plate, the formwork should be at least 15cm higher than the underside of the base plate.  The form should be fixed with the top sloping away from the base plate at a 45° angle, to form a slope, down which the grout can be poured.

  A piece of formwork should be fixed on top of the base plate as below, to allow a head of grout to build up.